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DEVIOE EOE. ,TEE INSPECTION OE ROOMS EEOM A DISTANT POINT. NO. 421,687. Patented Feb. 18, 1890.

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UNITED 'STATES ATENT FFICE.

GORGE OEOIL FARR, OF BRIGHTON, COUNTY OF SUSSEX, ENGLAND.

DEVICE FOR THE INSPECTION OF ROOMS FROM A DISTANT POINT.

SPECIFICATION forming part of Letters Patent No. 421,687, dated February 18, 1890.

Application filed November 6, 1888. Serial No. 290,147.

(No model.) Patented in England May 81, 1888, No. 7,987.

To ctZZ whom it may concern:

Beit known that I, GEORGE CEcIL FARR, architect, a subject of the Queen of Great Britain, residing at i4 Ship Street, Brighton, in the county of` Sussex, England, have invented an addition to or appliance for buildings or structures for enabling the in- ,teriors of rooms'or compartments to be observed from another room or compartment or place exterior to such rooms or compartments, (for Which I have applied for a patent in Great Britain, No. 7,987, dated May 3l, 1888,) of Which the following is a specification.

' The object of my invention is to enable an observer in a room/or compartment to inspect any part of other rooms or compartments by means of small tubes or passages and mirrors. f

In the accompanying drawings, Figure 1 is a vertical section of a building with four rooms; Fig. 2, a view of my improved adjustable mirror; Fig. 3, a detail View.

Any number of rooms, as B, C, and D, Fig. 1, are connected by tubes with the room Where the inspection takes place, as A. A tube or passage E projects into the room A, in any convenient position to bring an opening e in it into convenient position for the inspector, It is shown as projecting above a table f, at which the inspector can, When seated, look into the aperture e. The tube or passage E communicates with a tube or passage G, leading to the room B, and is there provided With an opening at g for receiving an image of the linterior of the room. This image is received upon a mirror g2, and is reflected successively to and from the mirrors g3, g4, g5, and g, and is nally reflected in the mirror c2, from which the inspector at the table f receives an image of the interior or part of the interior of the room B. The additional rooms are provided With tubes or passages and mirrors, as explained with regard to the room B, and those mirrors, which would otherwise intercept the view of the additional room or rooms, are mounted upon centers, so that they can be swung to one side to open the tubes leading to the particular room to be inspected and close the other or others. As shown in the drawings, the tube or passage L, Which is a conetinuation of the passage E, has in it an openi ing at Z, provided With a mirror Z2, by which an image of the room or part of the room O is obtained, it being reflected onto the mirror e2, the mirror g" being turned back into close the tube or passage Gand open the communication between thetubes or passages L and E. The tube or passage L has also an opening at Z3, opposite which is the mirror Z-l Jfor receiving an image of the room or part of the room D and transmitting it to the mirror c2 When the mirror Z2 (as Well as the mirror gs) is thrown back, as shown in dotted lines.

In order that the tube may be of the least possible size, the mirrors are of such a size that they Will receive an image of a part only of the rooms at one time. To enable any part of the room to be inspected, I provide at ZL an adjustable mirror, which can be turned in any direction. This mirror, as shown at Fig. 2, is furnished With three frames h2, h3, and h4. The frame h2 can turn in the frame h3 upon the horizontal center pins c', While the frame h3 can turn in the frame h4 upon the vertical center pins j. By leading chains or cords from the table f over pulleys or guides and attaching one to the frame h2 and the other to the frame ha the mirror h can be turned, so as to take any desired position to receive an image which is thrown upon the mirror g2.

In case it may be desired to make a more minute inspection-for example, if it be desired to read anything in theroom B-the inspector may look at the image received on the mirror e5l by means of a magnifying-glass K, which may be iixed in the opening at e, as shown in Fig. 3.

I claim as my invention- The combination of a room or rooms to the position shown in dotted lines, so as to' v be inspected, with :Ln inspeoio11-poi11t outname to this specification in the presence of side such room or rooms, and tubes leading two subscribing,r Witnesses.

from the room or l'oonis to the inspeotion- GEORGE CEOIL FARB. point, and adjustable mirrors in such rooms itnessesz 5 having three frames mounted at right angles XVALTER FRANCIS VATSON,

to eaoh othe1',\vhe1eby the mirror may be 123 Qweens Road, Boz'ghton, England. turned to any desired angie. JAMES WILLIAM STANHOPE,

In testimony whereof I have signed my 6 Meeting House Lcme, Bfrzghon, England, 

